Cylinder bearing means for drafting systems of spinning machines



April 17, 1956 J. J. KEYSER CYLINDER BE NG MEANS FOR DRAFTING SYSTEMS Filed Dec. 5 1951 SPINNING MACHINES 2 Sheets-Sheet 1 IN VEN TOR.

QAQQA Pale/7! Aye! April 17, 1956 J. J. KEY R 2,741,801

CYLINDER BE NG MEANS F DR ING SYSTEMS SPINNING MACHI s Filed Dec. 5, 1951 2 Sheets-Sheet 2 INVENTOR.

'1!" T L21 BY Johann J. Keyser a Q Q 9% United States Fatent a CYLINDER BEARENG MEANS FOR DRAFTIN G SYSTEMS 8F SPINNING MACHiNES Johann J. Keyser, Aarau, Switzerland, asst-gator to Schiess Aktiengesellsehaft, Dusseldorf-Oberirassel, Germany Application December 5, 1951, Serial No. ?,995

12 Claims. Jl. 19134) The present invention relates to spinning machines and, more particularly, concerns supporting or hearing means for cylinders of drafting systems of such machines.

In order to enable the processing of fibers of difierent staple length with one and the same drafting system, ef-

forts have been made for quite some time to arrange and provide the supporting or hearing means for the back cylinder of a drafting system in such a manner that its distance from the front or delivery roller may be varied. To this end, it has been suggested and heretofore was the generally adopted system to mount the hearing or supporting means for the back roller in a slide which is movable toward stationary supporting means for the draft apron and the floating drafting rollers. However, inasmuch as the slide as well as the stationary supporting means for the apron and the floating drafting rollers require relatively much space, the range of adjustment of the slide is only small so that it is impossible with one and the same drafting system of the heretofore known type properly to process both short staple fibers and long staple fibers.

The greatest drawback, however, of this known system consists in that, before the slide can be adjusted, it is necessary to remove the frame member or yoke which conveys pressure to the front or delivery roller. This requires considerable time in view of the relatively large number of screws which have to be removed and later to be inserted again. Furthermore, the slide has to be very carefully distanced from the front roller in order to obtain the desired result and to make sure that all slides t roughout the spinning machine are in the same relative position. Considering the fact that there are fifty and more drafting systems on one and the same spinning machine which have to be adjusted, it will be obvious that the adjustment of the back roller in the heretofore known spinning machines may easily take an entire day. 7

It is, therefore, an object of this invention to provide supporting or hearing means for the feed or similar cylinder of a drafting system which will overcome the above mentioned drawbacks.

it is another object of this invention to support and journal the feed cyl nder or a similar cylinder of a drafting system in such a manner that it can occupy a plurality of positions over practically the entire drafting field without requiring the removal of the frame member conveying pressure to the delivery roller and without requiring any measurement at all.

It is also an object of this invention to provide an arrangement as set forth in the preceding paragraph, in which the feed cylinder or a similar cylinder can directly be lifted out from its respective position and immediately be inserted into its new desired position without requiring any further steps.

It is still another object of this invention to provide means which will make it possible to apply the principle of the present invention to certain types of known draft- $341,801 Patented Apr. 17, 1956 'ice dd ing systems for spinning machines without requiring any change whatsoever in said drafting system.

These and other objects and advantages of the invention will appear more clearly from the following specification in connection with the accompanying drawing in which:

Fig. 1 diagrammatically illustrates the principle of the present invention.

Fig. 2 is a perspective view of the last two drafting systems of a spinning machine provided with the arrangement according to the present invention.

Fig. 3 is a perspective view of a rider according to the present invention adapted to serve as support or hearing for one shaft end of a feed cylinder.

Figs. 4 and 5 show the rider of Fig. 3 in its two effective positions.

Figs. 6 and 7 show a slight modification over the rider of Figs. 4 and 5.

Fig. 8 illustrates a rider which may selectively be turned about its horizontal or about its vertical axis to thereby yield a total of 8 different positions for journalling the cylinder to be supported.

Fig. 9 illustrates a still further modification of the invention.

Fig. 10 represents another rider form which will accommodate both a normal floating roller and a normal feeding roller.

General arrangement According to the present invention, a pair of bearing elements is provided for each drafting field, which pair is, preferably detachably, connected to the side rails laterally confining the drafting field and is provided with bearing surfaces adapted to hold the shaft or hearing studs of the feed cylinder or a similar cylinder at a desired distance with regard to the front or delivery cylinder.

According to a very simple and highly efiicient embodiment of the invention, each pair of bearing elements is provided with two spaced bearing surfaces which are asymmetrically arranged with regard to the leg means forming a part of the respective bearing element, while the leg means may be inserted into any of a plurality of notches normally serving as bearings or supports for the floating drafting rollers. These bearing elements form, so to speak, riders which ride on the said rails and at the same time form gauge elements in as much as these riders, when engaging any of the said notches, establish a definite distance between the respective bearing surface of the rider and the front cylinder or delivery cylinder. In other words, no additional measuring step is necessary. If desired, each individual rider may yield eight difierent hearing or supporting surfaces for the cylinder to be journalled. The insertion of such a rider into one of the notches in the respective side rail will not at all prevent direct insertion of the shaft of floating drafting rollers into adjacent notches of the rail.

Instead of providing a short rider insertable into any of the notches of the side rails of a drafting system, the rider may, according to the invention, also extend over a large portion of the side rail, e. g. over the entire length in the drafting field. In such instance, the rider is preferably provided in the top and bottom surface with differently arranged bearing surfaces for the shaft of the feed cylinder so that rotation of the rider about its longitudinal ms by brings new bearing surfaces into effective position. With this embodiment of the invention, the upper and/or the lower end of the rider may in any convenient manner be connected to the side rail.

Structural arrangement Referring now to the drawings in detail and Figs. 1

and 2 thereof in particular, the structure diagrammatically represented therein, i lustrates the principle of the present invention. As will be seen from these figures, the arrangement shown therein comprises a support 1 which support has journalled li'lfll'iilil the back roll 2 and front roll 3 and the driving shaft 4 for the draft apron 5. Connected to and supported by said support 1 are the side rails or cap bars 6 which are provided with the customary two upper notches or grooves 7 for the feeding cylinder 8 and with notches or grooves 9 for the floating drafting rollers 19 which, as is well known, have a materially smaller diameter and are materially lighter than the feeding cylinder 8. lournalled in the side rails 6 is furthermore the lower or return roller 11 of the apron 5. 'The reference numeral 12 designates the delivery roll or cot which is pressed against the front roll 3 by a lever 13 under pressure, while a. plush covered polishing roll 14 is' mounted above the delivery roll 12. The structure shown in Fig. 1 also includes a supporting table Set for the draft apron 5.

According to the present invention, a pair of riders 15 is associated with each drafting field, which riders are insertable with their legs 15a into any of the notches 9. Thus, if it is desired, in order to draft shorter staple fibers, to remove the feed cylinder 8 from the notches 7 and toplace it into the position shown at the left hand side of Fig. 2, it is merely necessary to place the ,riders 15 into the positions shown in Fig. 2, to grasp the cylinder 8, lift it straight out of the notches 7 bysliding it upwardly, and to deposit it so that the laterally protruding studs or shaft ends of the cylinder 8 rest against these surfaces of the riderslS which face the upper end of the drafting field.

As will be clear from the above and from the drawing, it is merely necessary to place all riders 15 in the same position thereof into the corresponding notches of all drafting fields in order to obtain the same position for the cylinder 8 throughout the entire machine, while no measurements are necessary.

Referring now to Figs. 4 and 5 showing the rider of Fig. 3 in two different positions, it will be seen that due to the asymmetry of the legs 15a with regard to the bearing surfaces 15b and 150, the cylinder 8 will occupy its highest position A (see Fig. 4) when the bearing surface 15b engages the shaft or studs 16 of the cylinder 8. When the rider 15 is turned about its vertical axis by 180 into the position of Fig. 5, the bearing surface 150 becomes effective, and the cylinder 8 is held in the next lower position B. As will be seen from Fig. 5,

. the distance between the positions A and ?B is relatively small which indicates the fine adjustment obtainable according to the present invention in the shortest possible time and without requiring any measurements at all.

The rider shown in Figs. 6 and 7 has the .same overall dimensions as the rider of Figs. 4 and 5 but differsifrom the latter in that it comprises a slot 17 with the bearing surfaces 17a and 1712 each of which may selectively be .made effective depending on the position of'the rider. .Thus, with one and the same rider of the type shownin Figs. 6 and 7, the cylinder 8 may be made to occupy four different positions indicated by the positions A, B, C, and D of the shaft or stud 16 in Figs. 6 and7.

Fig. 8 shows a rider 18 which differs from the rider of Figs. 6 and 7 in that it has two slots 19 and 20 respectively accessible from'two opposite surfaces of the rider. Furthermore, it has two corresponding oppositely located pair of legs 21 and 22 respectively. it will thus be clear that this rider doubles the possible positions available with the rider shown in Figs. 6 and 7. In other Words, the rider 18, when engaging one and the same slot or groove 9, allows the cylinder '8 to occupy eight different positions.

It should be noted that, after the riders of Figs. 3 to 7 have been placed into the desired positions, the floating changingthe effective side of the rider. the other hand, the arrangement of Fig. 10 simplifies the V 'pletely superfluous.

Fig. 10 also represents a great advantage and simplificaproper positions. In other words, the riders do not impede the visibility of the individual elements of the drafting systems or otherwise disturb the clearness of the machine. I

If desired, the riders of Figs; 3 to 8 may be replaced by a rider 23 which extends over at least the greater length of the respective side rail 6 and has slots 24 and 25 respectively arranged on opposite surfaces of the rider. The rider 23 may be connected to the respective side rail in any convenient manner as for instance by a screw 26 passing through a tongue 27 which fits into a corresponding slot 28. In the position shown in Fig. 9, the slots 24' are effectiveso that the stud or shaft 16 of cylinder 8 may occupy the positions I, III, V, etc. By temporarily removing the screw 26, and turning the rider 23 about its longitudinal axis, the slots 25 may be made effective,

in which instance the stud or shaft 16 may occupy the positions II, IV, VI, etc. While' this rider makes it possible, in one and the same position, to position "the cylinder 8 practically over the entire drafting field, it has the disadvantage that, in view of the fact that it extends over the entire side rail 6 or at least the greater part thereof, it impedes the survey of the drafting field from the side. Furthermore, whenever a rte-arrangement of the floating rollers 16 becomes necessary, the rider 23 will have to be removed, since in its effective positionit covers up the notches 9. This last mentioned drawback can be overcome by forming the rider as shown in Fig.10

of sheet metal, plastic or other material with grooves 29 so deep that they will accommodate both the shafts of studs of the floating rollers 16 as well as the studs or shaft of the cylinder '8. This serpentine shaped or corrugated rider or hearing member 30 whose groovesj29 serve as bearings for the feeding roller as well as for the floating rollers, may be attached in'any convenient manner to lateral supports 31 of the drafting frame, e. g.

'by'screws 32. a If desired, flange portions 33 may be connected to the rider 30 so that it may be turned about its longitudinal axis to make the grooves 34 effective as bearings for the feeding roller and floating rollers. arrangement only slightly impedes the survey 'of the machine from one point thereof but requires a change in construction of the customary side rails 6 so that it is not applicable to standard spinning machines now on the Furthermore, similar to the arrangement of Fig;

market. 9 the actuation of screws or the likeis necessary when However, on

manufacture of spinning machines inasmuch as it makes thelateral notching or recessing of the side rails com- Furthertnore, the arrangement of tion over heretofore known spinning machines with regard to the adjustment of the back or feeding roller. and

also of the floating rollers along the respective drafting field section between the respective two adjacent side rails.

From actual experience with spinning machines in textile factories it has been found that the riders of the type illustrated in Figs. 3 to 8 have proved most eflicientan'd satisfactory inasmuch as their use does not require'any change or alteration in the construction of customary drawing frames, and since they do not require the actuation of any special fastening means, do not impede the survey of the machine, are easy to handle, simple in construction and relatively inexpensive to manufacture.

It is, of course, understood that while the invention has been described in connection with a customary feed cylinder, it is equally well applicablewith other similar cylinders acting as intermediate cylinders, while thefeed cylinder remains at its usual place.

This 1 It is also to be understood that the present invention is, by no means, limited to the particular constructions shown in the drawing but also comprises any modifications within the scope of the appended claims.

What I claim is:

1. In combination in a drafting system for spinning machines: a draft apron, a cylinder arranged for cooperation with said draft apron, a pair of spaced longitudinally extending supporting means arranged laterally of and adjacent to said draft apron, each of said supporting means being provided with recesses on each of the longitudinal sides thereof, and a pair of bearing means, each of said bearing means being provided with a pair of spaced legs adapted to straddle either one of said supporting means and to engage the recesses thereof, said bearing means being provided with at least two oppositely located bearing surfaces dilferently spaced from said legs for holding said cylinder in at least two diiferent predetermined positions while said bearing means engages the same recesses of the respective supporting means.

2. As a new article of manufacture, a rider for use in connection with drafting systems of spinning machines, said rider having at least two recesses respectively open toward two opposite directions and being provided with bearing surfaces in said recesses for a drafting roller, said rider also being provided with a pair of leg means respectively located on the same sides toward which said recesses are open, said leg means being adapted detachably to be inserted into recesses of a drafting system arranged normally to hold floating drafting rollers in redetermined positions.

3. in combination in a drafting system for spinning machines: a draft apron, a cylinder adapted tocooperate with said apron, and a pair of substantially parallel corrugated bearing members spaced from each other and arranged adjacent said draft apron while having their longitudinal extension in the drafting direction of said apron, the corrugations of said bearing members extending transverse to the drafting direction of said apron and providing a plurality of spaced fixed bearing surfaces for said cylinder for selectively supporting said cylinder in any of a plurality of positions.

4. In combination in a drafting system for spinning machines: a draft apron, a feed roller for cooperation with said apron and having shaft means extending laterally thereof, a floating roller having a diameter smaller than that of said feed roller and having shaft means extending laterally thereof, and a pair of substantially parallel corrugated bearing members arranged adjacent said apron and spaced from each other while having their longitudinal extension in the drafting direction of said apron, the corrugations of said bearing members extending transverse to the drafting direction of said apron and respectively being of sufficient depth selectively to provide bearing surfaces for the shaft means of said feed roller or the shaft means of said floating roller.

5. In combination in a drafting system for spinning machines, a drafting apron, a cylinder including shaft means therefor for cooperation with the top surface of said apron, a pair of substantially parallel supporting means spaced from each other and arranged adjacent said apron, each of said supporting means being provided with at least one pair of recesses respectively located on opposite sides thereof and in alignment with each other, and two riders respectively straddlingsaid supporting means while detachably engaging the respective pair of recesses to be held stationary therein, said riders also being provided with bearing surface means for engagement with the shaft means of said cylinder.

6. In combination in a drafting system for spinning machines, a draft apron, a cylinder including shaft means therefor for cooperation with the top surface of said apron, a pair of supporting members having their longitudinal extension in the drafting direction of said apron and being accessible from the upper side of said apron while the latter is in its effective position, said supporting members laterally confining a drafting field and being provided with a plurality of pairs of recesses, the recesses of each pair being on opposite sides of one and the same supporting member, and a pair of bearing means respectively detachably engaging a pair of said recesses on each of said supporting members so as to straddle the same and to be held stationary therein, each of said pairs being prow'ded with bearing surfaces for respectively and selectively supporting said shaft means in a plurality of predetermined positions while said bearing means remains in one and the same position.

7. In combination in a drafting system for spinning machines, a draft apron, a pressure roll arranged for cooperation with said draft apron, a pair of spaced rails arranged laterally of and adjacent to said draft apron and provided with recesses on each side of each rail, and a pair of bearing means, each of said bearing means comprising a pair of spaced legs straddling the respective rail while detachably engaging two oppositely located recesses of one and the same rail, said bearing means being provided with bearing surfaces spaced from said legs for holding said cylinder in at least one predetermined position.

8. In combination in a drafting system for spinning machines, a draft apron, a cylinder arranged for cooperation with said apron, a pair of spaced cap bars arranged adjacent said draft apron, each of said cap bars being provided with oppositely located recesses, and a pair of riders, each of said riders being provided with a pair of spaced legs adapted detachably to straddle the respective cap bar while engaging two oppositely located recesses of one and the same cap bar, each of said riders being provided with at least two oppositely located bearing surfaces respectively differently spaced from said legs for holding said cylinder in two different positions.

9. As a new article of manufacture, a rider for use in connection with cap bars of drafting systems of spinning machines in which both sides of said cap bars are provided with recesses, said rider having a pair of spaced legs both extending into the same direction and being adapted to straddle a cap bar and detachably to engage recesses on opposite sides thereof, said rider also comprising at least one bearing surface spaced from both of said legs and adapted to engage a bearing stud of a drafting cylinder.

10. As a new article of manufacture, a rider for use in connection with cap bars of drafting systems of spinning machines in which both sides of said cap bars are provided with recesses, said rider having a pair of spaced legs extending in the same direction and adapted to straddle a cap bar and detachably to engage recesses on opposite sides thereof, said rider also having two end surfaces adapted to serve as bearing surfaces for a drafting roller, said end surfaces being arranged substantially parallel to each other and in spaced relationship to each other and to said legs in such a manner that one end surface has a greater distance from said legs than the other end surface.

11. As a new article of manufacture, a rider for use in connection with cap bars of drafting systems of spinning machines in which both sides of said cap bars are provided with recesses, said rider having a pair of spaced legs extending in the same direction and adapted to straddle a cap bar and detachably to engage recesses on opposite sides thereof, said rider also having two end surfaces adapted to serve as bearing surfaces for a drafting roller, said end surfaces being arranged substantially parallel to each other and in spaced relationship to each other and to said legs in such a manner that one end surface has a greater distance from said legs than the other end surface, said rider also being provided with a recess arranged intermediate said end surfaces for receiving shaft means of a drafting cylinder.

fields and provided with lateral recesses. for receiving the bearing studs of rollers, said rider having at least one recess adapted to receive the bearing stud of a roller and being'provided with two leg means facing in opposite directions with regard to each other and respectively adapted selectively to be detachably inserted into said lateral recesses.

References Cited in the file of this patent STATES PATENTS Goldsmith v May 9, Stroink Feb 22, Deyaux Oct. 18, Kluftinger "Jan. 30, Zalkind Aug. 26,

FOREIGN PATENTS Great Britain July 9, 

